节点文献

黑河上游林区冻土的水文功能

Hydrological Function of Frozen Soil in Forest Area in the Upper Reaches of Heihe River

  • 推荐 CAJ下载
  • PDF下载
  • 不支持迅雷等下载工具,请取消加速工具后下载。

【作者】 王金叶康尔泗金博文

【Author】 WANG Jin-ye 1, KANG Er-si 2, Jin Bo-wen 1 (1.Institute of Water Resource Conservation Forest in Qilian Mountains of Zhangye, Zhanye, Gansu, 734000, China; (2.Environmental and Engineering Research Institute of Cold and Arid Regions, Chinese Academy

【机构】 甘肃省张掖祁连山水源林研究所中国科学院寒区旱区环境与工程研究所甘肃省张掖祁连山水源林研究所 甘肃张掖734000甘肃兰州730000甘肃张掖734000

【摘要】 黑河上游冻土面积 (6 5 0 0 km2 )约占流域面积的 45 %,对水资源形成和稳定性有重要影响 ,多年冻土在世纪千年以上限制活动层的地下水系统 ,导致活动层土壤水分饱和 ,有利于提高植物蒸发对水的利用效率 ;同时多年冻土抑制水分向深层土壤的下渗 ,增加了径流深度和蒸腾发强度。由于多年冻土和季节冻土的影响黑河上游河川径流年内水文活动可分为三个时期 ,多年冻土区最大径流产生于融雪径流期。

【Abstract】 The area of frozen soil in the upper reaches of Heihe River occupies 45% of the catchments area. The frozen soil has great influence on formation and stability of water resources. Ever frozen ground restrains underground water system in activity layer over thousands of years, and it causes the saturation of soil water in the active layer, and contributes to improve the water using efficiency of plant evaporation. Ever frozen ground prevents water from infiltrating to deep layer, which increases the depth of runoff and intensity of transpiration. Annual hydrology activity of streamflow in the upper reaches of Heihe River can be divided into three periods due to the influence of ever frozen ground and seasonal frozen ground, and maximum runoff occurs during the snowmelt streamflow period in frozen ground.

【基金】 国家林业局“中国森林生态系统研究网络”项目 ( 96 -30 );“黑河流域水资源问题研究”项目资助
  • 【文献出处】 西北林学院学报 ,Journal of Northwest Forestry College , 编辑部邮箱 ,2001年S1期
  • 【分类号】S715
  • 【被引频次】31
  • 【下载频次】288
节点文献中: 

本文链接的文献网络图示:

本文的引文网络